192003-94-4Relevant academic research and scientific papers
2,3-Unsubstituted chromones and their enaminone precursors as versatile reagents for the synthesis of fused pyridines
Iaroshenko, Viktor O.,Mkrtchyan, Satenik,Gevorgyan, Ashot,Miliutina, Mariia,Villinger, Alexander,Volochnyuk, Dmytro,Sosnovskikh, Vyacheslav Ya.,Langer, Peter
supporting information; experimental part, p. 890 - 894 (2012/02/02)
A divergent and regioselective approach to fused pyridines was developed through formal [3 + 3] cyclocondensations from simple 2,3-unsubstituted chromones or their enaminone precursors.
Reaction of 5-amino-4-formyl-3-methyl(or phenyl)-1-phenyl- 1H-pyrazoles with active methylene compounds: Synthesis of fused heterocyclic rings
Ahluwalia, Vinod K.,Dahiya, Aruna,Carg, Vijay K.
, p. 88 - 90 (2007/10/03)
A convenient one-pot synthesis of fused heterocyclic ring systems, pyrazolo[3',4':5,6]pyrido[2,3-d]pyrimidines 3a-d, dipyrazolopyridines 4a-b, pyrazolo[3,4-]quinolines 5a-b and 6a-b and pyrazolo[3,4-]pyridines 7a-b, has been achieved by condensation of 5-amino-4-formyl-3-methyl(or phenyl)-1-phenyl-1H-pyrazoles 2a-b with 1,3-diaryl-4,6-dioxo-2-thioxo-hexahydropyrimidines, 3-methyl-1-phenyl-1H-2-pyrazolin-5-one, dimedone, cyclohexanone and 3-acetylpyridine, respectively.
